World number one Serena Williams lost her cool but not the match in a 6-7 (9), 6-2, 6-4 win over Christina McHale in the second round at Wimbledon.
The defending champion needed two hours and 29 minutes to down her compatriot on Centre Court, and will face a fine in excess of £5,000 for repeatedly smashing her racquet.
Williams first took out her frustrations on her racquet after losing the first set tiebreaker, and later flung it onto the turf as she went 0-2 down in the second set.
However, the 34-year-old recovered to down McHale and set up a third-round meeting with Annika Beck.
“I was just really, really, really angry. I had a lot of chances,” Williams, who hit 40 unforced errors, said after the match.
“She got really lucky on some shots. She just was playing great. I was a little disappointed in myself at that point.”
The top seed is joined in the third round by her older sister, Venus, who beat teenager Daria Kasatkina 7-5, 4-6, 10-8 in a match that was interrupted by rain on three occasions.
Williams will face 12th seed Carla Suarez Navarro in the third round after the Spaniard defeated Marina Erakovic 6-2, 6-2.